Towel bar



FIG. 1 is a perspective view of the towel bar of my design;

FIG. 2 is a right end elevation view, the left end elevation being the reverse of the view shown;

FIG. 3 is a front elevation view;

FIG. 4 is a bottom plan view; and,

FIG. 5 is a rear elevation view. 

The ornamental design for a towel bar, as shown and described. 